import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Roles from '../components/power/Roles.vue'
import Rights from '../components/power/Rights.vue'
import Ctegories from '../components/goods/Cate.vue'
Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: 'login'
  },
  {
    path: '/login',
    name: 'login',
    component: Login
  },
  {
    path: '/home',
    name: 'home',
    component: Home,
    redirect: '/welcome',
    children: [
      {
        path: '/welcome',
        component: Welcome
      },
      {
        path: '/users',
        component: Users
      },
      {
        path: '/roles',
        component: Roles
      },
      {
        path: '/rights',
        component: Rights
      },
      {
        path: '/categories',
        component: Ctegories
      }
    ]
  }
]

const router = new VueRouter({
  routes
})
/* 挂载路由导航守卫
  to 将要访问的路径
  from 代表从哪个路径条咋混而来
  next 是一个函数，表示放行，next() 放行 next('/login) 强制跳转
*/
router.beforeEach((to, from, next) => {
  if (to.path === '/login') {
    return next()
  }
  // 获取token
  const token = window.sessionStorage.getItem('token')
  if (!token) {
    return next('/login')
  } else {
    next()
  }
})
export default router
